Producing a carbon fiber recyclate comprises crushing a carbon fiber material, subjecting recycled raw material to decomposition to form a particulate carbon fiber recyclate

摘要

Producing a carbon fiber recyclate comprises crushing a carbon fiber (CFK) material comprising carbon fiber bundle (CFB) in a matrix material, in a recycled raw material, in which carbon fiber bundle portions are provided around the matrix material, and subjecting the recycled raw material to a decomposition treatment of the matrix material up to a level, in which the carbon fibers of the bundle portions are remain bounded and the carbon fibers (1) are exposed at the periphery of the bundle portions and thus forming a particulate carbon fiber recyclate (CFR). Independent claims are also included for: (1) producing a CFK molding compound for the sheet molding compound (SMC) process, comprising providing at least one curable matrix material that is applied flat and supplying the carbon fiber recyclate in a statistically uniform distribution to the surface yielded matrix material and introducing the carbon fiber recyclate in the matrix material, impregnating at least the exposed fibers on the periphery of the bundle portions, thus obtaining the carbon fiber molding compound, where the volume content of the carbon fiber recyclate at the carbon fiber molding composition is up to 50%; and (2) a CFK molding material obtained by the above method, comprising the carbon fiber recyclate obtained by the above method, and at least one curable matrix material comprising at least the exposed fibers penetrates at the periphery of the bundle portions, where the volume content of the carbon fiber recyclate at the CFK molding composition is up to 50%.